title: A relict lineage and new species of green palm-pitviper (Squamata, Viperidae, Bothriechis) from the Chortís Highlands of Mesoamerica.
abstract: A new species of palm-pitviper of the genus Bothriechis is described from Refugio de Vida Silvestre Texíguat in northern Honduras. The new species differs from congeners by having 19 dorsal scale rows at midbody, a bright green dorsal coloration in adults, the prelacunal scale fused to the second supralabial, and in representing a northern lineage that is sister to Bothriechis lateralis, which is distributed in Costa Rica and western Panama and is isolated from the new taxon by the Nicaraguan Depression. This represents the 15th endemic species occurring in Refugio de Vida Silvestre Texíguat, one of the richest herpetofaunal sites in Honduras, itself being the country with the highest degree of herpetofaunal endemism in Central America. We name this new species in honor of a Honduran conservationist slain in fighting against illegal logging, highlighting the sacrifices of rural activists in battling these issues and the critical importance of conservation in these areas.
authors.affiliation: Department of Biology, Indiana University of Pennsylvania, Indiana, Pennsylvania 15705-1081, USA ;  Centro Zamorano de Biodiversidad, Escuela Agrícola Panamericana Zamorano, Departamento de Francisco Morazán, Honduras.
authors.forename: Josiah H
authors.initials: JH
authors.lastname: Townsend
authors.forename: Melissa
authors.initials: M
authors.lastname: Medina-Flores
authors.forename: Larry David
authors.initials: LD
authors.lastname: Wilson
authors.forename: Robert C
authors.initials: RC
authors.lastname: Jadin
authors.forename: James D
authors.initials: JD
authors.lastname: Austin
keywords: Bothriechis guifarroi sp. n.; Bothriechis lateralis; Bothriechis marchi; Central America; Honduras; Pico Bonito National Park; Texíguat Wildlife Refuge; conservation; cryptic species; endemic